Update OpenSSF scorecard workflow

.github/workflows/scorecards.yml

@@ -1,7 +1,10 @@
 name: OpenSSF Scorecards
 on:
-  # Only the default branch is supported.
+  # For Branch-Protection check. Only the default branch is supported. See
+  # https://github.com/ossf/scorecard/blob/main/docs/checks.md#branch-protection
   branch_protection_rule:
+  # To guarantee Maintained check is occasionally updated. See
+  # https://github.com/ossf/scorecard/blob/main/docs/checks.md#maintained
   schedule:
     - cron: "43 20 * * 0" # run every Sunday at 20:43 UTC
   push:
@@ -13,16 +16,16 @@ permissions: read-all
 
 jobs:
   analysis:
-    name: Scorecards analysis
-    runs-on: ubuntu-latest
+    name: Scorecard analysis
+    runs-on: ubuntu-22.04
     permissions:
       # Needed to upload the results to code-scanning dashboard.
       security-events: write
-      # Used to receive a badge.
+      # Needed to publish results and get a badge (see publish_results below).
       id-token: write
-      # Needs for private repositories.
-      contents: read
-      actions: read
+      # Uncomment the permissions below if installing in a private repository.
+      # contents: read
+      # actions: read
 
     steps:
       - name: "Checkout code"